Finding the Fourth Proportional to 1,145.58, 1,724.56 and 1,043.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.58 : 1,724.56 = 1,043.52 : x
2. Step 2: Convert to fraction form
   1,145.58/1,724.56 = 1,043.52/x
3. Step 3: Cross multiply
   1,145.58x = 1,724.56 × 1,043.52
4. Step 4: Simplify right side
   1,145.58x = 1,799,612.85
5. Step 5: Solve for x
   x = 1,799,612.85/1,145.58
6. Step 6: Final answer
   x = 1,570.92